Roller guide for saw frames for horizontal and vertical multipleblade saw frames



AND

L. HROLD May 18 1926.

Patented May 18, 1926.

UNITED STATES PATENT OFFICE.

LUDWIG HGROLID, WIESBADEN, GERMANY.

ROLLER GUIDE FOR, SAW FRAMES FOR HORIZONTAL AND VERTICAL MULTIPLE- BLAIDE SAW FRAMES.

Application filed April 28, 1924. Serial No. 709,592.

l rame guidings for saw frames, such as against the Wood particles flying about atthe multiple blade saw frames, in which the sawing. This arrangement facilitates furslide blocks of the saw frame are constructther the observation of the frame guide which ed like ballor roller bearings, have become is so important for multiple blade saw li'nown. The saw frame is guided by rollframes. According to theinvention the coners, mounted in the ends of the saw frame tact surface of one of the side bars bevcross bars, between guide bars of the ma elled, that of the other guide bar being chine frame, a separate guide being genersmooth whereby a secure guiding on the ally provided for each frame cross bar. bevelled faces is ensured and the putting tow The wood particles and saw dust which fly gether of the guide bars and rollers is faabout at the sawing, settle on these guide cilitated as, on the plane side no adjusting bars, which are of course accommodated in work is required. The guide rollers on one the free space of the machine or in slits in side, preferably those on the plane side, are the sides of the machine frame. The wood resiliently mounted in order to compensate it particles settle preferably on the greasy for the narrowing of the free cross section 79 guide bars of the saw frame where they are of the passage between the pairs of rollers liable to produce serious disorders. In ordue to the settling of wood particles on the der to enable the saw frames with guide rollguide faces.

e s to be guided so that they can slide between An embodiment of the invention is shown stationary guide bars the diameter of the by way of example on the accompanying guide rollers must be somewhat shorter than drawing, in which the linear distance between the guide bars. F 1 shows diagrammatically in side eleit must not be overlooked that the cross secvation a vertical multiple saw blade frame.

tion of the passage between the guide bars is Fig. 2 shows in side elevation, and

as reduced by the wood particles and saw dust Fig. 3 in section on enlarged scale on the settling on the guide bars. The result is line 33 Fig. 1 the grooved roller and that at the reversal of stroke, particularly bevelled guide bar. owing to the high number of revolutions of Fig. 4c shows in elevation, and the machine, strong shocks occur from which Fig. 5 in plan view another form of con- Hi) the frame guides and the whole machine struction of the guide roller and guide bar.

suffer seriously. Fig. 6 shows in elevation, and

On the other hand it has already been pro- Fig. 7 in plan view a ball-shaped guide posed to guide the fixing bar for each saw roller and the corresponding guide bar. blade of pendulum saws between stationary Fig. 8 shows in elevation, and

: 5 rollers of the machine frame, a separate Fig. 9 in plan view the resilient mounting 9 guide with two pairs of rollers being arof a guide roller.

ranged at the end of each saw blade. The cross bars a of the saw frame are This invention has for its object to use connected with one another at their ends by this latter arrangement considerably simguide bars 0 and d to form a frame which,

plilied for the guiding of the saw blades of by means of crank rods 1) which act as usual multiple blade saw frames in order to avoid 011 both sides of the ends of the frame, is

the above stated inconveniences of the com- OVed up and dOWn. The guide rails c and monly used roller guides. With this object d slide upon two pairs of rollers e and f.

in view the frame cross bars are joined by In Order '00 ensure a good guiding of the 45 means of side bars to form a frame which sides of the saw frame the rollers e are conis guided between two pairs of stationary structed like grooved rollers and the guide rollers fixed in the machine frame. This arbar 0 as a bevelled bar as shown in Fig. 1. rangement makes it unnecessary to provide The rollers 7" however and the guide bar d special supporting columns between the have plane guide faces whereby much ad- 50 frame cross bars, said supporting columns justing work is saved. As shown in Figs.

be ng replaced by the side bars which re- 1, 8 and 9 a strong spring pressure is exquire only one guide at each side. erted on the rollers f. When the free cross According to the invention the guide section of the passage is reduced by wood frame can be arranged on the outer side of particles collecting on the guide elements the machine frame where it is better protected these rollers yield so that breakage is prevented. Figs. 2 and 3 show on enlarged scale the grooved roller 6 and the bevelled guide bar 0 in side elevation and plan View respectively. Another form of construction of the guide rollers is shown in Figs. 4- and 5 in elevation and plan view respectively, the guide roller 9 is smooth and the guide bar 0 has a guide groove. As shown in Figs. 6 and 7 in elevation and plan view the guide. rollers may consist each of a ball h on which the concave side edge of the guide bar moves. In this form of construction the friction produced can be reduced to the minimum when the radius of the con cavity of the guide bar is slightly greater than the radius of the ball.

The saw frame guide can be arranged as shown in Fig. 1 on the outer side of the machine frame whereby, besides a. better observation and easier accessibility, the great advantage isobtained that the frame guide is better protected a ainst the wood particles which fly about than if it were arranged on the inner surface of the machine frame or in this inner surface.

I claim 1 1. Roller guidings for saw frames for horizontal and vertical multiple blade saw frames comprising in combination with the machine f ame and with the cross bars of the saw frame, two side bars one at each end of the cross bars for connecting the cross bars to form a guide frame, and two pairs of stationary guide rollers fixed on the machine frame one pair at each side of the guide frame and designed to guide said guide frame.

2. Roller guidings for saw frames for horizontal and vertical multiple blade saw frames comprising in combination with the machine frame and with the cross bars of the saw frame, two side bars one at each end of the cross bars for connecting the cross bars to form a guide frame, and two pairs of guide rollers having hearings on the outer sides of the machine frame one pair at each side of the guide frame and designed to guide said guide frame so that the guide faces are well protected from wood particles flying about.

3. Roller guidings for saw frames for horizontal and verticle multiple blade saw frames comprising in combination with the machine frame and with the cross bars of the saw frai'ne, two side bars one at each end of the cross bars for connecting the cross bars to form a guide frame, one of said guide bars being bevelled, and two pairs of guide rollers having bearings on the outer sides of the machine frame one pair at each side of the guide frame and designed to guide said guide frame so that the guide faces are well protected from wood particles flying about, the pair of guide rollers for the side bar of prismatic cross section being grooved to guide said side bar.

In testimony whereof I afiiX my signature.

LUDWIG HGROLD. 

